Community discussion
There's an argument to be made that all we ought to require is that a LDP-S support:
LDP-NR with description, so that there's a resource to attach fixity info to
Want-Digest
Email thread:
https://groups.google.com/d/msg/fedora-tech/HMpD9n4273U/hOWX5WQ2CgAJ
Working Draft
http://fcrepo.github.io/fcrepo-specification/
Google-Doc